Green Party of the U.S. and the Democratic Socialist Party of the U.S.A. [View all]

I am considering officially joining the Green Party of the U.S. after reading much of their platform on their website and corresponding with a few registered members of that party. I also recently read through much of the platform of the Democratic Socialists of the U.S.A. and found much that I agree with there, too. In fact, both parties seem to have much in common when it comes to certain core issues. I am interested in replies from people who might be able to shed some light on any important differences between the two parties that one might consider when trying to make a choice about which one to join.